6.1 Loudness and Pitch

What causes sound to be made?

• Light waves

• Vibrations of objects

• Heat energy

• Magnetic fields

What does the loudness of a sound depend on?

• Frequency and wavelength

• Distance and speed of light

• Distance and vibration amplitude

• Speed of sound and air pressure

What happens to the loudness of a sound as the distance from the vibrating object increases?

• It gets louder

• It remains the same

• It gets quieter

• It changes pitch

What term describes the maximum distance particles move in a sound wave?

• Frequency

• Amplitude

• Wavelength

• Pitch

What is the shape of a sound wave graph called?

• Spectrum

• Waveform

• Oscilloscope

• Frequency curve

What does an oscilloscope do?

• Measures pitch

• Displays sound waveforms

• Increases loudness

• Changes frequency

What does a louder sound look like on an oscilloscope?

• It has a larger amplitude.

• It has more waves per second.

• It has longer waves.

• It has shorter waves.

Which of the following increases as amplitude increases?

• Frequency

• Pitch

• Loudness

• Wavelength

What happens to air particles when an object vibrates more?

• They move more slowly.

• They move greater distances.

• They stop moving.

• They move in circles.

What is the term for the highest point of a sound wave graph?

• Amplitude

• Frequency

• Peak

• Trough